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US 10,519,057 B2Granted
Method for the production of an optical glass element
AssigneeEV Group E. Thallner GmbH
InventorsGerald Kreindl, Mustapha Chouiki
Life of this patent
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Abstract
A method for the production of an optical glass element, with the following process sequence: a) applying a liquid embossing material on an embossing die, b) embossing the embossing material at a temperature of less than 500° C., c) hardening the embossing material, d) sintering the embossing material and thus executing the primary forming of the optical glass element. In addition, an optical glass element that is produced with the method, a device for implementing the method, and a use of this device are disclosed.
Claims17
A method for the production of an optical glass element, comprising:
- a) applying a liquid embossing material on an embossing die, the liquid embossing material containing additives added thereto,
- b) embossing the applied embossing material at a temperature of less than 500° C.,
- c) hardening the embossed embossing material in the embossing die such that the hardened embossing material is dimensionally stable,
- d) sintering the dimensionally stable embossing material and thus executing the primary forming of the optical glass element, whereby a reduction of a surface roughness of the optical glass element takes place during the sintering, and
- e) before and/or during the sintering, removing:
- 1) gases generated before and/or during the sintering;
- and/or
- 2) the additives added to the liquid embossing material,
- wherein the gases and/or the additives are removed such that a final concentration of the gases and/or the additives is lower than 100 ppm.
6 more elements
Dependencies are inferred from the claim text.